Journal article
Spillway jet regime and total dissolved gas prediction with a multiphase flow model
Journal of hydraulic research, Vol.57(1), pp.26-38
01/02/2019
DOI: 10.1080/00221686.2018.1428231
Abstract
A numerical model, based on the open source code OpenFOAM, was developed to predict jet regimes and total dissolved gas downstream of spillways. The model utilizes the volume of fluid method to track the interface between air and water. A detached eddy simulation model is used for turbulence closure. Transport and dissolution of bubbles are predicted using an Eulerian approach. A bubble number density equation was implemented to predict bubble size changes caused by dissolution and compression. Total dissolved gas was computed using a transport equation that includes the mass transfer between bubbles and water. The model simultaneously captured spillway jet regimes and distribution of total dissolved gas in a spillway sectional model of McNary Dam. Model parameters, gas volume fraction and bubble size at the entrainment region, were calibrated to match total dissolved gas measured in the field under different dam operations.
Details
- Title: Subtitle
- Spillway jet regime and total dissolved gas prediction with a multiphase flow model
- Creators
- Yushi Wang - University of IowaMarcela Politano - University of IowaLarry Weber - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of hydraulic research, Vol.57(1), pp.26-38
- Publisher
- Taylor & Francis
- DOI
- 10.1080/00221686.2018.1428231
- ISSN
- 0022-1686
- eISSN
- 1814-2079
- Grant note
- DE-EE0002668 / Hydro Research Foundation (10.13039/100008122)
- Language
- English
- Date published
- 01/02/2019
- Academic Unit
- Civil and Environmental Engineering; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984197193102771
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